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-rw-r--r--src/regex/perf-regex.c129
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diff --git a/src/regex/perf-regex.c b/src/regex/perf-regex.c
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1/*
2 This file is part of GNUnet.
3 Copyright (C) 2012 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19 */
20
21/**
22 * @file src/regex/perf-regex.c
23 * @brief Test how long it takes to create a automaton from a string regex.
24 * @author Bartlomiej Polot
25 */
26#include <regex.h>
27#include <time.h>
28#include "platform.h"
29#include "regex_internal_lib.h"
30#include "regex_test_lib.h"
31
32
33/**
34 * Print information about the given node and its edges
35 * to stdout.
36 *
37 * @param cls closure, unused.
38 * @param key hash for current state.
39 * @param proof proof for current state.
40 * @param accepting GNUNET_YES if this is an accepting state, GNUNET_NO if not.
41 * @param num_edges number of edges leaving current state.
42 * @param edges edges leaving current state.
43 */
44static void
45print_edge (void *cls,
46 const struct GNUNET_HashCode *key,
47 const char *proof,
48 int accepting,
49 unsigned int num_edges,
50 const struct REGEX_BLOCK_Edge *edges)
51{
52 unsigned int i;
53
54 printf ("%s: %s, proof: `%s'\n",
55 GNUNET_h2s (key),
56 accepting ? "ACCEPTING" : "",
57 proof);
58 for (i = 0; i < num_edges; i++)
59 printf (" `%s': %s\n",
60 edges[i].label,
61 GNUNET_h2s (&edges[i].destination));
62}
63
64
65/**
66 * The main function of the regex performance test.
67 *
68 * Read a set of regex from a file, combine them and create a DFA from the
69 * resulting combined regex.
70 *
71 * @param argc number of arguments from the command line
72 * @param argv command line arguments
73 * @return 0 ok, 1 on error
74 */
75int
76main (int argc, char *const *argv)
77{
78 struct REGEX_INTERNAL_Automaton*dfa;
79 char **regexes;
80 char *buffer;
81 char *regex;
82 int compression;
83 unsigned int alphabet_size;
84 long size;
85
86 GNUNET_log_setup ("perf-regex", "DEBUG", NULL);
87 if (4 != argc)
88 {
89 fprintf (stderr,
90 "Usage: %s REGEX_FILE ALPHABET_SIZE COMPRESSION\n",
91 argv[0]);
92 return 1;
93 }
94 regexes = REGEX_TEST_read_from_file (argv[1]);
95 if (NULL == regexes)
96 {
97 fprintf (stderr,
98 "Failed to read regexes from `%s'\n",
99 argv[1]);
100 return 2;
101 }
102 alphabet_size = atoi (argv[2]);
103 compression = atoi (argv[3]);
104 printf ("********* PERF-REGEX *********'\n");
105 printf ("Using:\n file '%s'\n Alphabet size %u\n compression %d\n",
106 argv[1], alphabet_size, compression);
107 fflush (stdout);
108 buffer = REGEX_TEST_combine (regexes, alphabet_size);
109 GNUNET_asprintf (&regex, "GNUNET_REGEX_PROFILER_(%s)(0|1)*", buffer);
110 size = strlen (regex);
111
112 fprintf (stderr,
113 "Combined regex (%ld bytes):\n%s\n",
114 size,
115 regex);
116 dfa = REGEX_INTERNAL_construct_dfa (regex, size, compression);
117 printf ("********* ALL EDGES *********'\n");
118 REGEX_INTERNAL_iterate_all_edges (dfa, &print_edge, NULL);
119 printf ("\n\n********* REACHABLE EDGES *********'\n");
120 REGEX_INTERNAL_iterate_reachable_edges (dfa, &print_edge, NULL);
121 REGEX_INTERNAL_automaton_destroy (dfa);
122 GNUNET_free (buffer);
123 REGEX_TEST_free_from_file (regexes);
124 GNUNET_free (regex);
125 return 0;
126}
127
128
129/* end of prof-regex.c */